在桃树栽植方面,由于苗木质量参差不齐,栽、重茬等原因,致使桃树根癌病在部分地块发成灾。为此,我们于1997年开始,在望马台园对桃树根癌病进行观察及防治试验,现简如下。 一、材料与方法 对新栽苗木,用中国农业大学植保系研制K—84菌剂蘸根,定植于已发病地块,第2、3 In the peach planting, due to the uneven quality of seedlings, planted, cropping and other reasons, resulting in peach root cause of cancer in some plots disaster. To this end, we started in 1997 to observe and prevent peach tree root cancer in Wangma Park, now as follows. First, materials and methods of newly planted seedlings, with China Agricultural University, Department of Plant Protection developed K-84 bacterial agent dipped root, planted in the disease has been the site, the second